George, I wouldn't go as far as to call it reckless. These heads are as big as a baseball, and bout as big as the vitals on a turkey. They have 4 long blades, and they wouldn't have to be horizontal to take a head off or make a clean quick kill.
Finding the vitals on a turkey can be tricky with any regular Bhead...and you gotta be on your mark.
As far as head movement on a turkey, I aggree...EXCEPT when he's all fuzzed up and the head is laid back in a bed of feathers....and from what little I know about picking a spot, that's head in the bed of feather's is sho'nuff a way to pick one. Also, there's not a lot of movement when they are standing still, and the head still stands out as a great focal point.
Everyone has to answer for themselves when it comes down to ethics, .....and if a guy maims a turkey with a Bhead a few times, and takes the head off the next three with a guillotine......then which is more ethical for that hunter? Hard to judge other's ethics based on their abilities and past experiences.
Just a few thoughts from a guy that don't hunt turkeys, but has watched them in the field many many times.